The manual, nearly identical to a tweet he shared on Monday, describes narcissistic personality disorder as “a pervasive pattern of grandiosity (in fantasy or behavior), need for admiration, and lack of empathy” and the latter as “a pervasive pattern of disregard for and violation of the rights of others.”

Conway has raised concerns about the president’s mental state in recent weeks, posting a series of tweets last week asking whether a "serious inquiry" needs to be made into the matter.

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“Don’t assume that the things [Trump] says and does are part of a rational plan or strategy, because they seldom are,” Conway said in a tweet on Monday. “Consider them as a product of his pathologies, and they make perfect sense.”

At the time, the attorney tweeted that he felt “all Americans” should be “thinking serious” about the president’s “mental condition and psychological state.”